Ballasts for T5 lamp - Program Start and Instant Start. We only warranty lamps with program start ballasts. Note - Workhorse is an instant start ballast and will operate various combinations of T5 from F24T5 to F80T5 lamps. See details for specific lamps, based on mfg. data. Wire diagrams for each ballast are available. see - http://www.naturallighting.com/order/store.php?crn=628